package com.nowcoder.community.controller;

import com.nowcoder.community.entity.*;
import com.nowcoder.community.event.EventProducer;
import com.nowcoder.community.service.*;
import com.nowcoder.community.util.CommunityConstant;
import com.nowcoder.community.util.CommunityUtil;
import com.nowcoder.community.util.HostHolder;
import com.nowcoder.community.util.RedisKeyUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.*;

@Controller
@RequestMapping("/discuss")
public class DiscussPostController implements CommunityConstant {
    @Autowired
    private DiscussPostService discussPostService;
    @Autowired
    private HostHolder hostHolder;
    @Autowired
    private UserService userService;
    @Autowired
    private CommentService commentService;
    @Autowired
    private LikeService likeService;
    @Autowired
    private ElasticSearchService elasticSearchService;
    @Autowired
    private EventProducer eventProducer;
    @Autowired
    private RedisTemplate redisTemplate;

    @RequestMapping(path = "/add",method = RequestMethod.POST)
    @ResponseBody
    public String addDiscussPost(String title,String content){
        User user=hostHolder.getUser();
        if(user==null)
        {
            return CommunityUtil.getJSONString(403,"你还没有登录!");

        }
        DiscussPost post=new DiscussPost();
        post.setUserId(user.getId());
        post.setTitle(title);
        post.setContent(content);
        post.setCreateTime(new Date());
        discussPostService.addDiscussPost(post);
        // 触发发帖事件
        Event event = new Event()
                .setTopic(TOPIC_PUBLISH)
                .setUserId(user.getId())
                .setEntityType(ENTITY_TYPE_POST)
                .setEntityId(post.getId());
        eventProducer.fireEvent(event);
        // 计算帖子分数
        String redisKey = RedisKeyUtil.getPostScoreKey();
        redisTemplate.opsForSet().add(redisKey, post.getId());

        return CommunityUtil.getJSONString(0,"发布成功!");

    }
    @RequestMapping(path = "/detail/{discussPostId}",method = RequestMethod.GET)
    public String getDiscussPost(@PathVariable("discussPostId")int discussPostId , Model model, Page page){
        //帖子
        DiscussPost post = discussPostService.findDiscussPostById(discussPostId);
        model.addAttribute("post",post);
        //作者
        User user = userService.findUserById(post.getUserId());
        model.addAttribute("user",user);
        //点赞数量
        long likeCount=likeService.findEntityLikeCount(ENTITY_TYPE_POST,discussPostId);
        model.addAttribute("likeCount",likeCount);
        //点赞状态
        int likeStatus =hostHolder.getUser()==null?0:likeService.findEntityLikeStatus(hostHolder.getUser().getId(),ENTITY_TYPE_POST,discussPostId);
        model.addAttribute("likeStatus",likeStatus);
        //评论的分页信息
        page.setLimit(5);
        page.setPath("/discuss/detail/"+discussPostId);
        page.setRows(post.getCommentCount());
        //评论；给帖子评论
        //回复：给评论回复
        //评论列表
        List<Comment> commentList = commentService.findCommentsByEntity(ENTITY_TYPE_POST, post.getId(), page.getOffset(), page.getLimit());
        //评论Vo列表
        List<Map<String ,Object>>commentVoList=new ArrayList<>();
        if(commentList!=null){
            for(Comment comment:commentList){
                //评论vo
                Map<String,Object>commentVo=new HashMap<>();
                //评论
                commentVo.put("comment",comment);
                //作者
                commentVo.put("user",userService.findUserById(comment.getUserId()));
                //点赞数量
                likeCount=likeService.findEntityLikeCount(ENTITY_TYPE_COMMENT,comment.getId());
                commentVo.put("likeCount",likeCount);
                //点赞状态
                likeStatus =hostHolder.getUser()==null?0:likeService.findEntityLikeStatus(hostHolder.getUser().getId(),ENTITY_TYPE_COMMENT,comment.getId());
                commentVo.put("likeStatus",likeStatus);
                //回复
                List<Comment> replyList= commentService.findCommentsByEntity(ENTITY_TYPE_COMMENT, comment.getId(), 0, Integer.MAX_VALUE);
                //回复vo列表
                List<Map<String,Object>> replyVoList =new ArrayList<>();
                if(replyList!=null){
                   for (Comment reply:replyList){
                       Map<String,Object> replyVo=new HashMap<>();
                       //回复
                       replyVo.put("reply",reply);
                       //作者
                       replyVo.put("user",userService.findUserById(reply.getUserId()));
                       //回复的目标
                       User target = reply.getTargetId() == 0 ? null : userService.findUserById(reply.getTargetId());
                       replyVo.put("target",target);
                       //点赞数量
                       likeCount=likeService.findEntityLikeCount(ENTITY_TYPE_COMMENT,reply.getId());
                       replyVo.put("likeCount",likeCount);
                       //点赞状态
                       likeStatus =hostHolder.getUser()==null?0:likeService.findEntityLikeStatus(hostHolder.getUser().getId(),ENTITY_TYPE_COMMENT,reply.getId());
                       replyVo.put("likeStatus",likeStatus);
                       replyVoList.add(replyVo);

                   }

            }
                commentVo.put("replys",replyVoList);
                //回复数量
                int replyCount = commentService.findCommentCount(ENTITY_TYPE_COMMENT, comment.getId());
                commentVo.put("replyCount",replyCount);

                commentVoList.add(commentVo);
            }
        }
        model.addAttribute("comments",commentVoList);
        return "/site/discuss-detail";

    }
    // 置顶
    @RequestMapping(path = "/top", method = RequestMethod.POST)
    @ResponseBody
    public String setTop(int id) {
        discussPostService.updateType(id, 1);

        // 触发发帖事件
        Event event = new Event()
                .setTopic(TOPIC_PUBLISH)
                .setUserId(hostHolder.getUser().getId())
                .setEntityType(ENTITY_TYPE_POST)
                .setEntityId(id);
        eventProducer.fireEvent(event);

        return CommunityUtil.getJSONString(0);
    }

    // 加精
    @RequestMapping(path = "/wonderful", method = RequestMethod.POST)
    @ResponseBody
    public String setWonderful(int id) {
        discussPostService.updateStatus(id, 1);

        // 触发发帖事件
        Event event = new Event()
                .setTopic(TOPIC_PUBLISH)
                .setUserId(hostHolder.getUser().getId())
                .setEntityType(ENTITY_TYPE_POST)
                .setEntityId(id);
        eventProducer.fireEvent(event);
        // 计算帖子分数
        String redisKey = RedisKeyUtil.getPostScoreKey();
        redisTemplate.opsForSet().add(redisKey, id);

        return CommunityUtil.getJSONString(0);
    }
    // 删帖
    @RequestMapping(path = "/delete", method = RequestMethod.POST)
    @ResponseBody
    public String setDelete(int id) {
        discussPostService.updateStatus(id, 2);

        // 触发删帖事件
        Event event = new Event()
                .setTopic(TOPIC_DELETE)
                .setUserId(hostHolder.getUser().getId())
                .setEntityType(ENTITY_TYPE_POST)
                .setEntityId(id);
        eventProducer.fireEvent(event);

        return CommunityUtil.getJSONString(0);
    }
}
